grain pearl的意思|示意

The oyster dutifully coats the little marble with anouter layer of pearl and much time is saved not having to grow each pearl upfrom the size of a sand grain.

牡蛎会尽职尽忠地为自己腹中的小珠子包裹上一层又一层的珍珠质。 比起那些要从小沙粒开始慢慢成长的珍珠，人工的方法明显会节省很多时间。

It is amazing that a grain of sand wanted to become a pearl?

小沙粒要变成珍珠，是不是有点儿不可思议呢？

Cultured pearls don’t have at their core a grain of sand, but instead arelittle plastic or glass beads or something that pearl farmers stick into theoyster for a year or so.

对于人工养殖的珍珠而言，它们的核心并不是沙粒，而是像小塑料珠或小玻璃珠之类的物体。 珍珠养殖者把这些小东西塞到牡蛎中，然后等上一年左右的时间。

First, ICRISAT mapped the genomic regions of pearl millet that control downy mildew resistance, grain production and straw yield under drought conditions.

首先，国际半干旱热带作物研究所绘制了珍珠谷子的基因区，这些谷子可控制干旱条件下的霜霉病抗性、谷物产量和产草量。

Allow your disappointment to form a pearl just as an oyster does when an irritating grain of sand gets inside its shell, but grab the pearl before the sand gets in your eyes.

把你的失望孕育成一枚珍珠，就像牡蛎对待一颗落入壳中的沙砾一样，但要在沙砾进入你的眼睛前抓紧珍珠。

Pearl is a pain around a grain of sand to build up the temple.

一粒珍珠是痛苦围绕着一粒沙子所建造起来的庙宇。